Cal 31 Sailboats for Sale

Layouts on the Used Market

The Cal 31 was produced with a single basic interior arrangement throughout its production run, and that consistency is part of what makes shopping the used market straightforward. The layout follows a conventional sloop interior: forward double formed by a V-berth with an insert, a separate head to port with integral shower and an overhead deadlight, a large main saloon with settee berths on both sides and a fold-down dining table, and a generous galley to starboard aft. The companionway steps lift out to reveal the engine — a sensible arrangement that became something of a Cal trademark.

Helm configurations split the fleet between tiller and wheel. Wheel-steered examples are common and will have a cockpit-sole access plate over the rudder stock head; tiller boats offer a somewhat cleaner cockpit. The bridgedeck traveler arrangement evolved over the production run — earlier boats carry the mainsheet traveler on the bridgedeck itself while later hulls moved it above the companionway — so it is worth noting which configuration you are looking at, as it affects how the cockpit functions for short-handed sailing. Cockpit locker space is generous but the original lid-securing system on many boats is famously convoluted; most owners have long since modified it.

Equipment and Common Upgrades

The standard rig is a masthead sloop on a Kenyon aluminum spar with single airfoil spreaders and double lower shrouds. Most boats in circulation carry at least a working jib and main; a 135–150 percent roller-furling genoa is a common addition and represents one of the more impactful upgrades an owner can make for shorthanded use, since the original inboard shroud placement creates a narrow sheeting angle that makes the foredeck feel cramped when handling hanked-on sails. Self-tailing winches — larger than the stock Barient 21s — are a frequent upgrade on boats that have passed through experienced hands.

Below, the water tanks are cast polyethylene and the fuel tank is welded aluminum. A number of owners replace the original nylon through-hull valves with full bronze seacocks, and boats that have had this done are generally more desirable. An autopilot and chartplotter are occasionally fitted upgrades rather than standard equipment, so their presence varies considerably across listings. VHF, depth sounder, and basic electronics are widely found, but expect variation in vintage and condition. The icebox typically remains a true ice box rather than a refrigerator conversion on most examples, though owners who cruise extensively sometimes add a 12-volt holding-plate system. The gimbaled stove — available originally in alcohol or propane — will often have been converted to propane on older hulls.

What to Inspect

The most recurrent owner complaints center on water intrusion: stanchion bases, chainplates, hatches, and the companionway are the usual culprits, and a careful survey of every deck penetration is non-negotiable. The companionway is structurally the weakest point in the design — it is wide, tapered, and the drop boards on many early examples showed daylight between them; check for any evidence of repeated below-deck moisture around the companionway and assess whether a proper sea hood has been fitted. The companionway slide is not inherently waterproof, making the optional sea hood essential on any boat that will see open-water passages.

The deck-stepped mast bears on a teak compression column over a molded fiberglass floor timber bonded to the hull; inspect this area for soft spots, delamination, or cracking around the base. The chainplates for the inboard shrouds are heavy stainless steel bar bolted through the main bulkhead, but the backing arrangement passes through a carpeted hull liner before the chainplate bears — verify there is no hidden corrosion and that the liner has not masked moisture damage. The fiberglass backing plates used behind certain through-bolted deck fittings are worth upgrading to metal if they have not been already; check all hardware for movement.

The bilge and plumbing deserve close attention: the original arrangement routes both the icebox drain and the shower through the bilge sump, which tends to produce persistent odor and can eventually clog bilge pump impellers with organic matter and soap residue. Ask whether this has been modified. The nylon ball valves on through-hull fittings below the waterline were a known concern even when the boats were new; confirm the status of all seacocks. The Universal diesel is generally considered adequate for the hull, but it transmits noticeable vibration to the hull and long motoring passages can be fatiguing — check mounts, alignment, and raw-water impeller history. Finally, the encapsulated lead keel is worth tapping around the base for any gelcoat cracking that might indicate stress or water intrusion into the encapsulation.

Availability and Buyer's Takeaway

The Cal 31 circulates most actively in US coastal markets — the Pacific coast unsurprisingly, given Cal's California origins, but East Coast and Great Lakes examples turn up regularly as well. The fleet is also represented in northern European waters, particularly in the Netherlands and surrounding North Sea sailing grounds, though selection there is thinner than in North America.

Buyers who do their homework on condition will find the Cal 31 a rewarding acquisition: the design is sound, the interior is genuinely exceptional for the size, and the hull is a proper ocean-capable shape rather than a day-sailor dressed up for cruising. The weak points are well documented and, where addressed, add real value.

Before making an offer, work through this checklist:

• Probe all stanchion bases, chainplates, and hatch frames for soft deck core and sealant failure
• Confirm companionway drop-board fit, slide water-tightness, and presence of a sea hood
• Inspect mast compression post and surrounding hull structure for delamination or cracking
• Verify all below-waterline through-hulls have been converted to proper bronze seacocks
• Check bilge plumbing routing and pump condition; smell for persistent icebox or shower drainage
• Run the engine under load and assess vibration, mounts, alignment, and cooling system
• Tap around the keel encapsulation for gelcoat stress cracks at the base
• Confirm chainplate backing arrangement behind the hull liner is free of hidden corrosion
• Evaluate winch sizing relative to your intended use and budget for self-tailing upgrades if absent
• Check halyard splices — early examples sometimes had improperly short wire-to-rope tails on the main halyard